Inductive conversion device and energy control method

Abstract

An energy control method for a inductive conversion device comprising: determination of individual error of multiple output voltages; determination of peak current based on the errors, determination of total energy through the peak current and charging to at least one inductor according to the peak current, whereas the inductor will store the total energy.

Description

[0001]This application is based upon and claims the foreign priority of a pending Taiwanese patent application filed on Oct. 20, 2009 with Taiwan App #98135387.TECHNICAL FIELD[0002]This invention relates to an electronic circuit device and energy effectiveness control method, especially an inductive conversion device and energy control method applied to power circuit conversion devices.BACKGROUND TECHNOLOGY[0003]Nowadays, many industrial applications and various electronic products have the design of power circuit, which will include a converter circuit, and the most common converter circuit will be equipped with an inductor. The U.S patent No. US2006 / 0114624, for example, proposes a converter system and control method with single inductor and multiple outputs, which feeds back the output voltage and dynamically generates reference current (IREF) through reference voltage generator and switching controller to control the inductor charging and discharging of the converter. However, c...

AI Technical Summary

Benefits of technology

[0015]This invention provides an inductive conversion device and energy control method that uses the error of output voltage to calculate the peak current of charging inductor and obtain the actual demand of total energy, thus effectively boosting the energy efficiency. The invention provides an inductive conversion device and energy control method that utilizes the fact that the total energy area corresponding to the output voltage error equals to the energy area of total energy required by the system to quantify the total energy required by the system based on output voltage error, thus improving the accuracy of energy estimation. The invention further provides an inductive conversion device and energy control method that can be applied in energy determination of various inductive conversion device circuit designs, thus provides extensive scope of application.

Problems solved by technology

However, charging the inductor with this reference current (IREF) as current threshold will result in energy exceeding the actual energy demand of the system, so the converter's energy effectiveness is not high.

However, although the method of forming a short-circuit path through free-wheeling switch can effectively solve the problem of energy exceeding the actual demand of the system by releasing the energy, the excessive energy is released through grounding in the process of energy release, thus rendering the energy effectiveness even more inferior than the technology disclosed in the above-mentioned U.S patent.

Images